public void run() {
try {
_db.init();
} catch (DBException e) {
// TODO make error logging level configurable
e.printStackTrace();
return;
}
try {
_workloadstate = _workload.initThread(_props);
} catch (WorkloadException e) {
e.printStackTrace();
return;
}
// spread the thread operations out so they don't all hit the DB at the same time
try {
// GH issue 4 - throws exception if _target>1 because random.nextInt argument must be >0
// and the sleep() doesn't make sense for granularities < 1 ms anyway
if ((_target > 0) && (_target <= 1.0)) {
sleep(Utils.random().nextInt((int) (1.0 / _target)));
}
} catch (InterruptedException e) {
// do nothing.
}
try {
if (_dotransactions) {
run(
new OperationHandler() {
@Override
public boolean doOperation(DB db, Object workloadstate) {
return _workload.doTransaction(db, workloadstate);
}
});
} else {
run(
new OperationHandler() {
@Override
public boolean doOperation(DB db, Object workloadstate) {
return _workload.doInsert(db, workloadstate);
}
});
}
} catch (Exception e) {
e.printStackTrace();
}
try {
_db.cleanup();
} catch (DBException e) {
e.printStackTrace();
}
}
public void run() {
try {
_db.init();
} catch (DBException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
try {
_workloadstate = _workload.initThread(_props, _threadid, _threadcount);
} catch (WorkloadException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
// spread the thread operations out so they don't all hit the DB at the same time
try {
// GH issue 4 - throws exception if _target>1 because random.nextInt argument must be >0
// and the sleep() doesn't make sense for granularities < 1 ms anyway
if ((_target > 0) && (_target <= 1.0)) {
sleep(Utils.random().nextInt((int) (1.0 / _target)));
}
} catch (InterruptedException e) {
// do nothing.
}
try {
if (_dotransactions) {
long st = System.currentTimeMillis();
while (((_opcount == 0) || (_opsdone < _opcount)) && !_workload.isStopRequested()) {
if (!_workload.doTransaction(_db, _workloadstate)) {
break;
}
_opsdone++;
// throttle the operations
if (_target > 0) {
// this is more accurate than other throttling approaches we have tried,
// like sleeping for (1/target throughput)-operation latency,
// because it smooths timing inaccuracies (from sleep() taking an int,
// current time in millis) over many operations
while (System.currentTimeMillis() - st < ((double) _opsdone) / _target) {
try {
sleep(1);
} catch (InterruptedException e) {
// do nothing.
}
}
}
}
} else {
long st = System.currentTimeMillis();
while (((_opcount == 0) || (_opsdone < _opcount)) && !_workload.isStopRequested()) {
if (!_workload.doInsert(_db, _workloadstate)) {
break;
}
_opsdone++;
// throttle the operations
if (_target > 0) {
// this is more accurate than other throttling approaches we have tried,
// like sleeping for (1/target throughput)-operation latency,
// because it smooths timing inaccuracies (from sleep() taking an int,
// current time in millis) over many operations
while (System.currentTimeMillis() - st < ((double) _opsdone) / _target) {
try {
sleep(1);
} catch (InterruptedException e) {
// do nothing.
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
try {
_db.cleanup();
} catch (DBException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
}
/**
* Initialize any state for this DB. Called once per DB instance; there is one DB instance per
* client thread.
*/
public boolean init() throws DBException {
return _db.init();
}